1/17/2012 Temperature and Release Summary for Shasta and Trinity - December 2011

(Updated twice a week November through April)

Sacramento River Water Temperatures in Degrees F

Day Collected from CDEC (California Data Exchange Center) in CFS

Control

TCD SHD minus Point Shasta Spring Crk 

Wt. TCD 6/1 to 12/31 Generation Powerplant 

Avg. (Diff) Shd Spp Kwk Bsf Jlf Bnd Rdb Lws Ccr Igo Nfh El 815 Release 

Nov 52.1 51.1 51.3 51.4 51.2 51.2 51.3 51.2 45.3 51.2 50.0 46.4 5,363 1,409 

Dec

1 52.6 (1.0) ? 51.6 49.3 51.0 50.0 49.6 49.5 49.5 44.4 50.8 47.7 43.5 4,125 1,533 

2 52.5 (0.9) ? 51.6 49.4 50.8 50.3 50.0 49.7 49.5 43.9 50.7 47.9 42.6 3,894 1,530 3 52.5 (1.2) ? 51.3 49.2 50.7 49.5 49.0 48.9 49.1 43.4 50.4 47.2 42.0 3,745 1,522 4 ? 52.5 (0.9) ? 51.6 ? 49.1 ? 50.6 ? 49.5 ? 49.0 ? 48.7 ? 48.6 ? 43.0 ? 50.5 ? 47.1 40.7 3,872 1,529 

5 ? 52.3 (0.8) ? 51.5 ? 48.9 ? 50.6 49.3 49.0 48.8 48.8 43.0 50.1 ? 47.0 40.1 4,718 652 6 52.2 (0.9) ? 51.3 48.7 50.9 49.3 48.7 48.3 48.2 42.9 50.4 46.6 40.2 4,546 650 

7 52.1 (0.8) ? 51.3 48.6 50.8 49.4 48.9 48.5 48.4 43.0 50.5 46.5 40.7 4,788 654 8 52.4 (0.9) 51.5 48.5 50.6 49.5 49.0 48.6 48.6 43.2 50.5 46.4 41.4 3,908 1,035 9 52.1 (0.8) 51.3 48.4 50.5 49.3 48.8 48.5 48.6 43.0 50.2 46.2 41.5 3,808 783 

10 52.0 (0.8) 51.2 48.2 50.5 49.0 48.4 48.1 48.1 43.0 49.9 46.0 40.7 3,645 1,094 11 52.1 (0.9) ? 51.2 47.9 50.3 48.8 48.2 47.8 47.8 43.1 49.8 45.9 40.5 3,569 1,250 12 52.0 (0.9) ? 51.1 47.9 50.2 48.9 48.4 48.2 48.1 43.0 49.7 46.0 40.8 4,243 582 13 52.0 (0.9) ? 51.1 47.9 50.3 48.8 48.2 47.8 47.8 42.4 49.9 45.8 40.1 4,104 480 14 51.6 (0.7) ? 50.9 47.7 50.3 48.6 47.8 47.4 47.4 42.6 49.7 45.5 39.0 4,539 476 15 51.7 (0.7) ? 51.0 47.7 50.3 49.8 49.2 48.9 48.4 43.5 50.3 46.6 41.1 4,368 401 16 51.9 (0.7) ? 51.2 47.8 50.4 49.5 49.0 48.8 49.0 43.3 50.2 46.4 42.1 4,237 546 17 51.7 (0.4) ? 51.3 47.9 50.3 50.0 49.4 49.0 49.0 42.7 50.5 46.5 41.9 4,048 806 18 51.2 (0.7) 50.5 48.4 50.3 49.2 48.8 48.7 49.0 43.3 49.9 45.9 41.5 4,526 54 19 53.1 (1.2) ? 51.9 48.2 50.5 49.5 49.0 48.5 48.4 43.4 50.4 46.1 41.8 5,243 50 20 53.5 (0.7) 52.8 48.0 50.2 49.5 49.2 48.7 48.7 42.9 50.1 45.8 41.4 5,125 50 

21 53 2 52 6 48 1 51 5 49 7 49 2 48 6 48 5 42 6 50 7 45 5 40 3 4 793 50 

Mean Daily Releas

21 53.2 (0.6) 52.6 48.1 51.5 49.7 49.2 48.6 48.5 42.6 50.7 45.5 40.3 4,793 50 

22 53.1 (0.6) 52.5 47.9 51.7 49.6 48.9 48.2 47.8 41.4 51.0 45.1 38.7 4,785 50 23 52.9 (0.6) ? 52.3 47.9 51.5 49.6 48.8 48.4 47.8 41.5 50.9 44.9 37.8 4,797 50 24 52.9 (0.8) ? 52.1 47.9 51.5 49.6 48.8 48.4 47.8 41.3 51.0 45.3 37.6 4,999 50 25 53.3 (1.3) ? 52.0 47.9 51.5 49.6 49.0 48.6 48.0 41.6 50.9 44.9 37.9 4,745 50 26 53.2 (1.3) ? 51.9 47.8 51.4 49.6 48.8 48.4 48.0 42.0 50.9 45.1 39.1 4,931 50 27 52.7 (0.9) ? 51.8 47.7 51.3 49.8 49.2 48.9 48.4 42.5 51.0 45.5 40.4 4,667 50 28 52.9 (1.1) ? 51.8 47.7 51.4 51.0 50.7 50.5 49.7 43.1 51.5 46.2 42.2 4,791 50 29 52.5 (0.8) ? 51.7 47.5 51.5 50.7 50.5 50.4 50.3 43.4 51.3 45.9 43.6 4,813 50 30 52.5 (1.1) ? 51.4 47.4 51.4 51.1 51.0 50.9 50.4 43.1 51.4 45.8 43.8 4,903 50 31 52.4 (0.9) ! 51.5 47.2 51.2 50.0 49.7 49.5 49.7 42.3 51.0 44.9 42.0 4,867 50 

Avg 52.4 51.6 48.2 50.8 49.6 49.1 48.8 48.6 42.8 50.5 46.1 4,456 523 Tot cfs 138,142 16,227 Tot af 274,005 32,186 

# = Station out of service ^ - estimated (7 hours or less available) ? = Avg. includes estimated data! = 17 hours or less of readings & = 18 to 23 hours of reading ND = No hourly readings or incorrect 

Control Point: Balls Ferry 3/1/2011 to 5/31/2011; Jelly's Ferry 6/1/2011 to 12/31/2011NOTE: On 7/19/2011 the probe for SHD was extended farther out into the river so at low flows

 it should no longer be exposed to the air. 8/2/2011 the extended pipe floated away.  Some hourly readings for SHD are questionable again and are being estimated.